Kedah Trial 2024 Science Kertas 1

Science

Kedah Trial 2024 Science Kertas 1

• Kedah Trial
• 40 questions
• With explanations

1

Diagram 1 shows a fire extinguisher. Which of the following sources of fire is suitable to be extinguished by this fire extinguisher?

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A Petrol B Paper C Cooking oil D Electrical appliances

T4 Chapter 1.3 Fire Extinguishers

2

The Heimlich Manoeuvre is an emergency procedure that is carried out to save an individual. What is the victim's situation that requires this method?

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A Holding the neck with both hands B Severely injured in an accident C Has no heartbeat D Hit by lightning strike

T4 Chapter 2.2 Heimlich Manoeuvre

3

Why is the pulse rate of an athlete lower than a non-athlete when resting?

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A Athlete's heart muscles are less active when resting B Athlete's heart muscles are weak when they are not exercising C Athlete's heart muscles are weak because of excessive use of steroid D Athlete's heart muscles are stronger to pump more blood throughout the body

T4 Chapter 3.2 Pulse Rate

4

Which of the following is the normal blood pressure reading?

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A 120/80 mmHg B 110/90 mmHg C 130/80 mmHg D 100/70 mmHg

T4 Chapter 3.3 Blood Pressure

5

Study the following information. > Tokyo 2021 Olympic Games medals are produced from electronic waste. Which of the following is the purpose of the action in the Green Information and Communication Technology (ICT) practice?

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A Save on manufacturing cost B Reduce the greenhouse effect C Improving solid waste management method D Reduce the use of dangerous materials

T4 Chapter 4.6 Green Technology and Life

6

Diagram 2 shows the condition of a forest near to the industrial area. Which of the following gases cause the effect?

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A Sulphur dioxide B Hydrogen C Nitrogen D Chlorine

T4 Chapter 4.1 Environmental Sustainability

7

Diagram 3 shows a substance used to produce biofuels. Which of the following material can replace the substance X?

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A Petrol B Natural gas C Plant wastes D Animal fat

T4 Chapter 4.2 Energy Sector

8

Diagram 4 shows the first generation by a cross of two flower plants. What are the genotypes of Parent 1 and Parent 2 if R represents the dominant gene for red flower and r represents the recessive gene for white flower?

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A RR x rr B Rr x RR C Rr x Rr D Rr x rr

T4 Chapter 5.2 Inheritance

9

Diagram 5 shows the karyotype of an individual suffering from a genetic disease. What is the name of the genetic disease?

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A Albinism B Thalassemia C Turner syndrome D Klinefelter syndrome

T4 Chapter 5.3 Mutation

10

Which of the following is an example of discontinuous variation?

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A Height B Skin colour C Body mass D Hair colour

T4 Chapter 5.5 Variation

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